Effect of Fine Particle Bombarding on Fatigue Strength Behaviors of Vacuum Carburized SCM415

Abstract

In order to make clear the effects of fine particle bombarding on the fatigue strength behaviors of vacuum carburized SCM415,rotating bending fatigue tests were carried out in air at room temperature, using both smooth and notched specimens. Furthermore, the micro structure, the residual stress, and the fracture surface of specimens were also investigated. Based on the above results, the improvement of fatigue properties was discussed by comparing them with both fine particle bombarded specimen and as carburized specimen.